We're dividing 750825 by 51 
The aim is to understand the frequency of 51 in 750825.

Advancing to step 1:
51 can be fit into 7 0 times, resulting in a remainder of 7.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 7 after subtracting 0 from 7.
Include the next digit (5) from the dividend after 7, then repeat: 75 / 51

Step 2:
If we divide 75 by 51, we get 1 and a remainder of 24.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtract 51 from 75 to get 24.
Include the next digit (0) from the dividend after 24, then repeat: 240 / 51

On to step 3:
When dividing 240 by 51, we get 4 with a remainder of 36.
Record the quotient 4 as the next digit in the result. 
Result so far: 14.0
If we subtract 204 from 240, we get 36.
Fetch the next digit (8) from the dividend, attach it to 36 and continue: 368 / 51

Step 4:
When dividing 368 by 51, we get 7 with a remainder of 11.
Use 7 as the next digit of our solution. 
Result so far: 147.0
Deduct 357 from 368 and we're left with 11.
Bring next digit (2) of the dividend behind the 11 and repeat the process: 112 / 51

Going ahead to step 5:
The number 51 fits into 112 2 times, leaving a remainder of 10.
Put 2 as the next digit of the answer. 
Result so far: 1472.0
Deduct 102 from 112 and we're left with 10.
Bring next digit (5) of the dividend behind the 10 and repeat the process: 105 / 51

Step 6:
51 goes into 105 2 times with a remainder of 3.
Record the quotient 2 as the next digit in the result. 
Result so far: 14722.0
The remainder is 3 after subtracting 102 from 105.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Step 7:
If we divide 30 by 51, we get 0 and a remainder of 30.
Put 0 as the next digit of the answer. 
Result so far: 14722.0
If we subtract 0 from 30, we get 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Advancing to step 8:
51 goes into 300 5 times with a remainder of 45.
Use 5 as the next digit of our solution. 
Result so far: 14722.05
Subtracting 255 from 300 leaves us with 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

On to step 9:
51 goes into 450 8 times with a remainder of 42.
Write down 8 as next digit of the result. 
Result so far: 14722.058
The remainder is 42 after subtracting 408 from 450.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Moving on to step 10:
51 goes into 420 8 times with a remainder of 12.
Write down 8 as next digit of the result. 
Result so far: 14722.0588
Subtracting 408 from 420 leaves us with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

The final outcome is 14722.0588, with a leftover of 0.00012.